1. Proposal of an Evaluating Method on Lubrication
2. ICFG, 1983, “General Recommendations for Design, Manufacture and Operational Aspects of Cold Extrusion Tools for Steel Components,” ICFG DO. No. 6/82, Int. Cold Forging Group, Portcullis Press.
3. Lahoti, G. D., and Allan, T., 1982, “Ring and Spike Tests for Evaluating Lubricants,” Battele Topical Report, pp. 11.